Comorbidities and Burden of COPD: A Population Based Case-Control Study

Florent Baty(University of St.Gallen), Martin Brutsche(University of Basel), Paul Martin Putora(University of St. Gallen), Bruno Isenring(University of Zurich), Torsten Blum(MSB Medical School Berlin)
PLoS ONE
May 17, 2013
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